Add edit task

[jackreichert]

Context You can add a task, but what if you made a mistake?

As a person using this app I want to be able to edit tasks So that I can fix mistakes or change tasks as I need

Acceptance criteria

• Edit button inline by each task
• When clicked text is inside input field
• Field can be saved, or cancel out of edit

[jackreichert]

Resolved by https://github.com/jackreichert/over-engineered-todo/pull/66